About the expert Sasha Ross, DMD, MS, is a board-certified periodontist who has been with the Cleveland Clinic since 2013.

Credit: Chester Zoo/Cover Images Rico the sloth has undergone pioneering surgery to take care of a pesky toothache that had been plaguing Chester Zoo’s slow-moving mammal. Amazing images captured at ...

Early last year, keepers at Chester Zoo first spotted that 25-year-old Rico, a two-toed sloth, had swellings on the side of ...

The evolution of teeth began in the oceans around half a billion years ago. First, filter-feeding fish evolved jaws – not to ...